Wheeled hand truck

Abstract

A wheeled hand truck incorporating a footplate; a segmented retainer flange; a left pin pivotally mounting a left segment of the retainer flange and allowing sliding flange motion to a clearance elevation; a right pin pivotally mounting a right segment of the retainer flange and allowing sliding flange motion to the clearance elevation; left and right stops extending downwardly from the left and right flange segments; and left and right pairs of sockets positioned for, upon alternative motions of the left and right flange segments toward and away from the clearance elevation, and upon forward and rearward pivoting of the left and right flange segments, alternately holding the left and right flange segments at laterally and forwardly extending positions.

Description

FIELD OF THE INVENTION[0001]This invention relates to hand trucks of the type which are specially adapted for alternatively performing turf aerating.BACKGROUND OF THE INVENTION[0002]Hand trucks of the type which are specially adapted for performing turf aerating are known (e.g., See U.S. Pat. No. 8,714,275 issued May 6, 2014 to Ng). Such known turf aerating hand trucks commonly incorporate and configure mechanical parts which produce economic waste, and excess complexity of moving parts. Such turf aerating hand trucks also commonly undesirably impose mechanical restrictions which interfere with attachment and utilization of more than a single pair of turf aerating tines.[0003]The instant inventive wheeled hand truck solves or ameliorates the problems, defects, and deficiencies described above by incorporating a specialized slide shaft and pivot pin functioning handle in combination with a matrix of pin and socket pivot stops.BRIEF SUMMARY OF THE INVENTION[0004]A first structural com...

AI Technical Summary

Benefits of technology

[0007]In the preferred embodiment, the left and right pivot pins are vertically lengthened beyond the vertical dimensions of the left and right retainer flange segments, such lengthening adapting the pivot pins for service as slide shafts. As slide shafts, the pivot pins facilitate vertically upward and downward motions of the left and right retainer flange segments away from and toward the foot plate. The preferred vertical lengthening of the left and right pivot pins facilitates upward motions of the left and right retainer flange segments from the upper surface of the foot plate to an overlying elevation which constitutes a clearance elevation, the parameters of which are further described below.

Problems solved by technology

Such known turf aerating hand trucks commonly incorporate and configure mechanical parts which produce economic waste, and excess complexity of moving parts.

Such turf aerating hand trucks also commonly undesirably impose mechanical restrictions which interfere with attachment and utilization of more than a single pair of turf aerating tines.

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